The 1989-1993 1st Gen Dodge Rams with the legendary 12 Valve 5.9L Cummins engine came factory equipped with a three inch turbo back aluminized exhaust with a considerably restrictive muffler. While this system is reasonably adequate for stock to mildly powered trucks, a larger diameter system from Diamond Eye, Magnaflow, MBRP, Mel's Manufacturing, or Silverline is mandatory on any Cummins equipped with even mild upgrades, or for those towing heavy loads. And this is why we recommend a four inch exhaust system to absolutely ANYONE with a 1st Gen Cummins! And of course, there are other benefits to adding an exhaust kit besides purely functional, aftermarket kits not only sound good, but they look even better, especially with a polished or black tip to finish it off. For those looking for something even more unique, try out a set of exhaust stacks by MBRP. And you wouldn't believe the shuddering sound they produce, either!
You can either search by manufacturer by selecting one of the categories, or view our complete selection below. If you’re having trouble determining the best route for your exhaust system or components, feel free to give us a call or send an e-mail to
cs@dieselpowerproducts.com and we’d be happy to steer you in the right direction.